Exhaust Sizing? - Ford Powerstroke Diesel Forum
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Old 09-26-2007, 05:52 PM
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Exhaust Sizing?

Ok, just getting an idea of what size exhaust to get. I'm planning on running a downpipe back system. I'll keep a muffler (at least at first) with the cat removed. I will not be racing this truck. This is my daily and my racecar tow vehicle but I figure there is no reason to leave it alone. My main question is what size pipe do you guys think I should go with. The truck is basically stock right this minute but I'll be adding a ton of stuff in the next few months. The current plan is an AFE Stage II intake, SCT Livewire, exhaust(obviously), and later turbo, injector, headstuds (unless I earn them sooner!).

The truck pulls a little trailer right now but we will be upgrading to something in the 48-52 foot car hauler with living quarters. I am new to the Powerstroke thing. I work on everything diesel in the motorhome world but have yet to mess with the world of little diesels. Everything smaller than 5" in diameter looks little to me.

So, now after reading my novel----whatcha think?
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Old 09-26-2007, 05:56 PM
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I would with the the "standard" 3.5 DP, cat delete, performance muffler (I have MBRP) and 4" pipes to 5" tips. Single or dual is upto you. I have the cat out and the muffler in to duals. I LOVE IT!! Good sound, but not enough to p!$$ off the neighbors.
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Old 09-26-2007, 05:56 PM
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4" should be fine for what you're doing, but the 5" sounds really nice...
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Old 09-26-2007, 06:02 PM
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my vote is for a 4" straight pipe...
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Old 09-26-2007, 06:27 PM
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4" Straight pipe vote also.
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Old 09-26-2007, 07:07 PM
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That's what I wanted to know. I've been looking at the 4 and 5 inch models and wasn't sure which to go with. I love the massive 5" look but if I don't really need it then I'm not sure I want it.

Ok, now that we have a few suggestions on size--what about brand? I want something that fits great. I'm a mechanic by trade so installation is never a problem. If I didn't have to fabricate something during an upgrade I'm not sure I'd know what to do with myself.
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Old 09-26-2007, 07:23 PM
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the MBRP is by far one of the greatest fits... now would you need SS or AL? magnaflow is also very good but a lil bit more expensive
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Old 09-27-2007, 06:51 AM
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FBD Budget kit will give the MBRP stuff a run for it's money on fit and finish!! Always look to get the most for your money - 4in turbo back with a free flow muffler will sound much better on top end.
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Old 09-27-2007, 06:51 AM
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4 in straight pipe my vote also
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